反硝化脱氮除磷-侧流磷回收工艺效能

发布时间：2018-06-10 09:19

本文选题：污水处理 + 脱氮　；参考：《农业工程学报》2016年10期

【摘要】：为了调查反硝化同步脱氮除磷-侧流磷回收新工艺的工艺效能,该试验在该工艺稳定运行条件下评价其污染物(化学需氧量、总氮、NH+4-N和PO3-4-P)去除能力和磷回收能力。结果表明:当进水中化学需氧量、总氮、NH+4-N和PO3-4-P的质量浓度为239.2~259.5、39.6~43.8、38.2~41.8和8.72~11.40 mg/L,出水中相应的质量浓度分别为15.2~21.6、8.5~9.6、3.6~4.7和0.31~0.49 mg/L,满足国家《城镇污水处理厂污染物排放标准》(GB18918-2002)一级A排放标准;COD主要在厌氧池被去除,NH+4-N主要在好氧硝化池中去除;污水中磷的去除主要由诱导结晶磷回收和生物除磷两部分组成;整个工艺中,磷去除效率为95.9%,其中诱导结晶磷去除率占总去除效率的71.5%,表明该工艺具有较大磷回收潜力。此外,后置曝气池可对出水中COD、NH+4-N和PO3-4-P浓度起着把关作用,有助于提高出水水质。
[Abstract]:In order to investigate the efficiency of the new process of simultaneous denitrification and phosphorus removal and side flow phosphorus recovery, the removal capacity and phosphorus recovery capacity of pollutants (chemical oxygen demand, total nitrogen NH _ 4-N and PO _ 3-4-P) were evaluated under the condition of stable operation of the process. The results show that: when the chemical oxygen demand in the influent, The mass concentrations of NH _ 4-N and PO _ 3-4-P were 239.2n 259.5N 39.6N 43.8N 38.2N 41.8 and 8.72n 11.40 mg / L respectively, and the corresponding mass concentrations in the effluent were 15.21021.6U 8.69.63.64.7 and 0.310.49 mg / L respectively, which met the National Standard for discharge of pollutants in Municipal Wastewater treatment plants GB18918-2002) and COD was mainly removed in anaerobic ponds. NH _ 4-N was mainly removed in aerobic nitrification tank. The phosphorus removal in wastewater is mainly composed of induced crystalline phosphorus recovery and biological phosphorus removal, and the phosphorus removal efficiency is 95.9in the whole process, among which the induced crystalline phosphorus removal efficiency accounts for 71.5 percent of the total removal efficiency, which indicates that the process has a large phosphorus recovery potential. In addition, the post-aeration tank can act as a gatekeeper for the concentration of CODN NH _ 4-N and PO _ 3-4-P in the effluent, which is helpful to improve the effluent quality.
【作者单位】：安徽科技学院资源与环境学院;东南大学能源与环境学院;
【基金】：安徽省自然科学基金面上项目(1508085ME90) 安徽省教育厅自然科学重点研究项目(KJ2015A173)
【分类号】：X703.1

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